Adjustable ring gauge



me@ Eig W2K B H. BLQD ADJUSTABLE RING GAUGE Filed July l0 1920 www,

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ADJUSTABLE RING GAUGE.

application luly'w, 1920. Serial. lilo. 395,212.

To all whom it may concern:

Be it known that l, BRYANT lil. Bacon, av citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Adjustable Ring Gauges, of which the following is a specication.

This invention relates to gauges and particularly to an adjustable ring gauge an the means combined therewith for slightly adjusting the size of the gauge to coinpen` sate for wear. ln accordance with the invention l rovide a gaging body split at one side tv ereof and lprovided with improved means adjacent the split portion for accurately'adjustin the size of the gau e and for holding te ends thereof in a justed position and in true alignment. rlhis means preferably comprises the Structure illustrated in the accompanying drawing, although it will be readily understood that the structure illustrated may be considerably modied within the scope ofthe invention as defined by the appended claims.

Referring to the figures of the drawings:

Fi ure l is a front view of a gauge einbodyingthe invention, certain parts being shown inV section.

Fig. 2 is a side view thereof.

lFig. 3 is a plan view, certain parts bein shown in section.

Fig. d is a fragmentary vsectional vyiew similar to Fi l but illustrating a modified forni of the invention.

Fig. 5 is a fragmentary view taken on the line 5-5 of Fig. d.

ln a gauge such as the ring u e illustrated in the drawing, and partie arly in a thread gauge, it is very essential that the split ends of the gauge not only be held securely in the position to which they are adjusted, but also that the ends be held in true alignment. rlhe present invention not only discloses simpler and 'more secure means for obtaining the adjustment required and for performing the holding function but such means also acts to perform the additional doweling function of holdinv the ends of the uge in true alignment. 7lhile in the drawing ll have illustrated my invention as applied to a gauge having an internal threaded gaging surface, it will be understood' that the invention is not so limited but may with equal facility be applied to female gauge such as shown,

similar types of erpansiblegaugee having either external or internal fn surfaces either smooth or threaded. 'lhe scope of the invention is dened inthe claims appended hereto.

Referring to the drawing by reference characters, 1 represents a auge body hav` ing two relatively adjusta le end sections 2 and '3. The invention is particularly a plicable to a vfemale gauge of the split body type, and ll have therefore shown a bod of this form, the body being integral and aving a kerf or split at 4l separatin the two sections 2 and 3, this split preferaly being wider at the outer portion da than at the inner portion d for a purpose to be hereinafter described. Preferably there are one or more other kerfs as at 5-5 which do not extend entirely through the body, these kerfs reducing the cross sectional area of the body and permitting the sections 2 and 3 to be more readily adjusted..` ln the case of a there is rovided an interior gaging surface 6 w ich is adapted to contact with the parts to be gaged. ll have illustrated t surface as conforming to screw threads, but it will be understood that as to this there may be variation, as a diderent surface may be provided, as, for instance, a smooth cylindrical surface. ln the female type of f.: auge shown, ll preferably provide fa hnurle surface l on the exterior thereof.

For relatively adjusting the two sections 2 and 3 and for locking them after adjustment, ll preferably provide a tapered inember mounted between the ends of the gauge for separating the same and a second member engaging both ends of the gauge for vdrawing the same together into hrm con-A 'lhe second tact with the tapered member. member preferably comprises a screw, as illustrated in the drawing, and the hrst member may comprise a tapered screw, as illustrated, or other means, 4as for example a tapered pin or wed, a screw however being preferable as wil be hereinafter described. As illustrated, the tapered meinber between the gauge ends extends transversely of the secon member and engages the ends of the gauge preferably directly radially outside of the second member and serves to separate the said ends and to hold the ends in alignment. By placing the a-.f expanding member between the gauge ends ad'acent the periphery of the gauge, such en s may be more easily and acvcurately separatedl and adjusted thereby and the inner end portions of the auge adjacent the bore or gagin sur ace thereof are left intact and in a re atively close position for gaging purposes. Alm by placing themembers in the position just decribed the tightening of the gau e ends onto the tapered member by means the secondvinsember will not warp or twist the gauge laterally as would be the case if the gau e ends had contact ywith the tapered mem r to one side or the other of the second member. The gauge ends are therefore held in true alignment while being adjusted and tightened as well as after such operations have l been completed.

As illustrated inFigs. 1, 2 and 3, l provide two screw threaded members 8 and 9, one screw, as 9, being adapted to separate the ends of the bod and thereby increase the" effective size of t e gauge, and the other screw, as8, being adapted to draw the ends of the body to ther and thereby reduce the eective size o the body and compensate for wear. The ends of the gauge rin are bored out as at 10 and 11 to receive t e screw 8 therein, the part 11 being screw threaded and the part 10 being counterbored at 10a to receive thehead of the screw 8 therein. Within the wider portion 4a ofI the split 4 and preferably substantially parallel with the. longitudinal axis of the gauge I mount the second adjusting member, as the taper screw 9. `By reference to Figs. 1 and 3, it will be seen that this screw threadedly engages transverse grooves or threads 12 and 13 in the ends of the gauge. It will be seen that the ends of the gauge may be very linely and accurately adjusted by slightly rotating this screw and the'threaded engagement of the screw with the grooves-positively prevents any relative lateral movement of the gauge ends in a direction parallel to the longitudinal' axes of the screw and gauge whereb the ends of the gaging threads 6 might distorted out of alignment. The outer portion 4 of the split 4 is preferably made wider than the inner portion 4", such construction permitting the ends of the threads on the gaging surface 6 to approach each other in .close proximity and'also permitting only a small arcuate portion of the screw 9 to engage in the threads 12 and 13 whereby such screw in practically all posi tions of adjustment seats to the bottom of the threads as illustrated in Fig. 1. As illustrated in Fig. 3, the screw 9 1s originally positioned with the smaller end flush with one face of the gauge at 14, the other end ofthe screw being beneath the other face of the gauge whereby is left a space 15 adapted to be sealed with sealing wax after i the gauge has been properly adjusted. Most invasa-a adjustments of the gage will be to compensate-for wear and such adjustments will comprise the fbackin out of the screw 9. The space 15 left in t e gauge allows for this adjustment of the screw 9.

In adjusting the gauge, the screw 9 is rst set to a position holding the gauge ends at the desired adjustment. The screw 8 is then tightened, thereby clamping the ends 2 and 3 of lthe gauge vinto contact with the screw 9. As will be readily seen in this position the threaded' engagement between the ends' 2 and 3 of the gauge and the screw 9 holds the gauge ends 2 and 3 secured in exact alignment, such a construction being articularly applicable in a thread gau e w ere the gaging threads of the ends 2 an 3 of the gauge must exactly align.

In Figs. 4 and 5, l have illustrated one of the several modified forms in which my invention may be embodied. This construction is similar to the other form illustrated, the principal diierence being that the tapered member between the gauge ends is arranged radially of the gau e. he gauge ends are provided with racially extendlng screwthreaded portions 16 and 17 into which is threaded the tapered screw 18, this screw extending transversely ofthe screw 8 and engaging the ends of the gauge solely directradially outside of the screw 8. The adjusting operation is the same as heretofore dpscribed, and it will be seen that in both forms of the gauge the gauge ends are at all times held in true alignment. It may be stated, however, that the form of my invention illustrated in Figs. 1, 2 and 3 is preferred since in such form the screw threaded engagement'of the screw 9 with the screw 4threads 12 and 13 positively prevents an relative lateral movement of the gauge en s,

in a direction parallel to the longitudinal axis of the gauge whereby the ends of the .gaging threads 6 might be distorted out of alignment.

What I claim is:

1. The combination in a gauge, of an adjustable split body having a gaging surface adapted to contact with the parts to be gaged, means extendin through and engaging 'both ends of the sp'lit portion ofthe gauge for drawing such ends together, and a screw threaded tapered member extending transversely of the said means and engaging the Aends of the gauge directly radially outside of the said means for separating the said ends and for holding the ends in alignment,

rotation of the said screw being adapted to adjust the tapered. portion thereof vlongitudinally. f

. 2. The combination in aA gauge of an adjustable split body having a gaging surface adapted to contact with the parts to be gaged, means engaging both ends 'of the split portion of the gauge for drawing such maratea 3. The combination in a gauge, ot an adjustable split body having a gaging surface member having 'screw-'threads thereon adapted to contact with the parts to be gd, means engaging both ends of the split portion of the gauge for drawing such ends together, and a screw having a threaded tapered portion extending between and threadedly engaging' both. ends of the gauge for separating the said ends and for holding the ends 1n alignment. l

d. The combination in a gauge, of an adjustable split body having a gaging surface adapted to contact with the parts to be gaged, means engaging both ends of the split portion of the gauge tor drawing such ends together, and a tapered member extending between the ends of the gauge transveisely of the said means and substantially parallel with the longitudinal axis of the gau e for separating the said ends and for holing the ends in alignment, the said or adjusting the same longitudinally.

5. The combination in a gauge, of anadjustable split body having a gaging surface adapted to contact with the-parts to be gaged, means engaging both ends ofthe split portion of the gauge for drawing such ends together, and a screw having a threaded tapered portion ext/ending between the ends 'of the gauge transversely of the said means and substantially parallel with the longitudinal axis ot the gauge for separating the said ends and forholding the ends in alignment.

6. The combination iii a gauge, of an adjustable split body having a gaging surface adapted to contact with the parts to be gaged, means engaging both ends on? the split portion of the gauge for drawing such ends together, and a screw having a threaded tapered portion extending between and threadedly engaging both ends of the gauge for separating the said ends and for hold.

ing the ends in alignment, the screw extending transversely of the said means and substantially parallel with the longitudinal axis of the gauge. y

7. The combination in a gauge, of an adjustable split body having a gaging surface adapted to contact with the parts to g, and adjusting means comprising an element engaging both ends of the split portion of the gauge .tor drawing such ends ther and a screw having a. threaded tapered portion extending between and threadedly engaging both ends of the g?. e for separating t e `said ends and for ol ing the ends in alignment, the screw ex-` tending transversel of the said element and substantially para lel to the longitudinal axis of the gauge and the said adjusting means being entirely within the outlines of the gauge.

8. rll`he combination in a female gauge, ot an adjustable split bod. having an interior gaging surface adap 'to contact with the parts to, be both ends of the split portion of the gauge for drawing such ends together, and a screw having a threaded tapered portion extending between and threadedly engaging the said two gauge ends for separating the said ends and for holding the ends in alignment.

9. The combination in a female gauge, of an adjustable split body having an interior gaging surface adapted to contact with the.

parts to be gaged, screw means engaging both ends of the split portion of the gauge for drawing such ends together, and a screw having a threaded tapered portion extending between and threadedly' engaging the said two gauge ends and substantially pargaged, screw means engaging.

allel with the longitudinal axis of the gauge for separating the said ends and for holding the ends in alignment.

10. rllhe combination in a lfemale thread gauge, of an adjustable split body having an interior screw-threaded gaging surface adapted to contact with the parts to be gaged, screw means engaging both ends of the split portion of the gauge for drawing such ends together, and means substantially parallel with the longitudinal axis of the gauge and engaging transverse grooves in the gauge ends for separating the ends of the augle and for holding the gaging threa s t ereof at the split portion in alignment.

11. The combination in a female thread gauge, aninterior screw-threaded gaging surface adapted to contact with the parts to be gaged, screw means engaging both ends of the split portion of the gauge for drawing such ends together, and a screw having a threaded tapered portion extending between and threadedly engaging the-said two gauge ends radially outsidethe said screw means for separating the said ends and for holding the ends in alignment, the space between the ends of the gauge being wider at the circumference thereof than'at the oentral ope-niin whereby only a small arcuate portion o the tapered screw engages the ends of be the gauge and whereby the adjacent ends of the gaging threads within the gauge are gaged, screw means engng both ends of tot i lill@ iro the split portionbof the gauge for drewing' such ends together, and a. screw lheving a threaded tapered portion extending between and threadedly engaging the said two auge d ends and substantially parallel ,with theV longitudinal exis of the gauge for separat ing the said ends and for' holding the ends in valignment the space between the ends of the gauge belng Wider et the circumference www@ signature.

BRYANT H. BLOOD.

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